1 //===-- ExpressionVariable.cpp --------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8
9 #include "lldb/Expression/ExpressionVariable.h"
10 #include "lldb/Expression/IRExecutionUnit.h"
11 #include "lldb/Target/Target.h"
12 #include "lldb/Utility/LLDBLog.h"
13 #include "lldb/Utility/Log.h"
14 #include <optional>
15
16 using namespace lldb_private;
17
18 char ExpressionVariable::ID;
19
ExpressionVariable()20 ExpressionVariable::ExpressionVariable() : m_flags(0) {}
21
GetValueBytes()22 uint8_t *ExpressionVariable::GetValueBytes() {
23 std::optional<uint64_t> byte_size =
24 llvm::expectedToOptional(m_frozen_sp->GetByteSize());
25 if (byte_size && *byte_size) {
26 if (m_frozen_sp->GetDataExtractor().GetByteSize() < *byte_size) {
27 m_frozen_sp->GetValue().ResizeData(*byte_size);
28 m_frozen_sp->GetValue().GetData(m_frozen_sp->GetDataExtractor());
29 }
30 return const_cast<uint8_t *>(
31 m_frozen_sp->GetDataExtractor().GetDataStart());
32 }
33 return nullptr;
34 }
35
36 char PersistentExpressionState::ID;
37
38 PersistentExpressionState::PersistentExpressionState() = default;
39
40 PersistentExpressionState::~PersistentExpressionState() = default;
41
LookupSymbol(ConstString name)42 lldb::addr_t PersistentExpressionState::LookupSymbol(ConstString name) {
43 SymbolMap::iterator si = m_symbol_map.find(name.GetCString());
44
45 if (si != m_symbol_map.end())
46 return si->second;
47 else
48 return LLDB_INVALID_ADDRESS;
49 }
50
RegisterExecutionUnit(lldb::IRExecutionUnitSP & execution_unit_sp)51 void PersistentExpressionState::RegisterExecutionUnit(
52 lldb::IRExecutionUnitSP &execution_unit_sp) {
53 Log *log = GetLog(LLDBLog::Expressions);
54
55 m_execution_units.insert(execution_unit_sp);
56
57 LLDB_LOGF(log, "Registering JITted Functions:\n");
58
59 for (const IRExecutionUnit::JittedFunction &jitted_function :
60 execution_unit_sp->GetJittedFunctions()) {
61 if (jitted_function.m_external &&
62 jitted_function.m_name != execution_unit_sp->GetFunctionName() &&
63 jitted_function.m_remote_addr != LLDB_INVALID_ADDRESS) {
64 m_symbol_map[jitted_function.m_name.GetCString()] =
65 jitted_function.m_remote_addr;
66 LLDB_LOGF(log, " Function: %s at 0x%" PRIx64 ".",
67 jitted_function.m_name.GetCString(),
68 jitted_function.m_remote_addr);
69 }
70 }
71
72 LLDB_LOGF(log, "Registering JIIted Symbols:\n");
73
74 for (const IRExecutionUnit::JittedGlobalVariable &global_var :
75 execution_unit_sp->GetJittedGlobalVariables()) {
76 if (global_var.m_remote_addr != LLDB_INVALID_ADDRESS) {
77 // Demangle the name before inserting it, so that lookups by the ConstStr
78 // of the demangled name will find the mangled one (needed for looking up
79 // metadata pointers.)
80 Mangled mangler(global_var.m_name);
81 mangler.GetDemangledName();
82 m_symbol_map[global_var.m_name.GetCString()] = global_var.m_remote_addr;
83 LLDB_LOGF(log, " Symbol: %s at 0x%" PRIx64 ".",
84 global_var.m_name.GetCString(), global_var.m_remote_addr);
85 }
86 }
87 }
88